Control means for sliding bolt door catches



Sept. 27, 1938. R, M. TURNER CONTROL MEANS FOR SLIDING BOLT DOOR(PATCHES Filed May '21 1936 2 Sheets-Sheet 1 INVENTOE' M (33 ATTY.

p 1938. R. M. TURNER- 2,131,458

CONTROL MEANS FOR SLIDING BOLT DOOR CATCHES Filed May 21; 1956 2Sheets-Sheet 2 z I A5 [I I Q In 209 fie 5* Fahar l Murra Turn erPatented Sept. 27, 1938 CONTROLIVLEANS FOR SLIDING BOLT DOOR OATCHESRichard Murray Turner, Kew, Australia Application May 21, 1936, SerialNo. 80,94

In Australia July 5,1935

3 Claims.

This invention relates to means which are pted to be actuated bypush-pull handles to retract catches of sliding bolt type, which may becombined with lock mechanism and which is usable on doors and otherhinged structures.

One object of this invention is to provide sim-' ple, efiective,durable, and inexpensive means to retract sliding bolts of the typeindicated.

Another object of this invention is to provide bolt retracting meanswhich may be combined with lock mechanism of known construction withoutmaterially altering the construction of such mechanism.

Control means for catches of sliding bolt type,

5 according to this invention, is characterized by a longitudinallyslidable actuating bar or rod which is so constructed that when it ismoved from a normal position it retracts a slidable bolt which isarranged at right angles to it or it actuates means to retract such abolt.

In one embodiment of this invention the actuating bar or rod is soformed that when moved longitudinally it rotates a rollback which inturn retracts a slidable catch or bolt. Preferably the said bar or rodis a fiat strip which is twisted In a further modified arrangement partof the bar or rod is inclined or wedge-shaped to co-act with part of asliding bolt in such manner that 5 when the said bar or rod is movedlongitudinally from its normal position, the bolt is retracted.

But in order hat this invention may be more readily understood,practical embodiments thereof will now be described With reference tothe 40 accompanying drawings in which:

Fig. 1 is an end elevation showing part of a door having a lock ofmortise type fitted therein, including twisted bar mechanism to actuatea rollback to retract the lock bolt.

Fig. 2 is a side View of the parts n g- 1. Figs. 3 and 4 are detailviews including a spring bolt and retracting means therefor of the typeillustrated in Figs. 1 and 2. In Fig. 3 the r bolt is in normalprojected position while in Fig.

'7 is a detail perspective view of rollback elements formed of sheet'metal.

Fig. 8 is a perspective view of a rollback comprising elements as shownin Fig. 7 in assembled position. 5

Fig. 9 is an end view of. a lock having modified actuating means. 1

Fig. 10 is a side view at right angles to Fig. 9, with parts broken awayto disclosethe. sliding bolt and parts associated therewith. 10

Fig. 11 is a sectional plan of the parts in Figs.

9 and 10. I

In the arrangement illustrated in Figs. 1 to 6,

I5 is a sliding bolt which is actuated toward its normal projectingposition by a spring I6 in 15 known manner and which is retractable by apartially rotatable rollback II, also in known manner.

An actuating rod [9 which is helically twisted at I9 engages a suitablyshaped slot I 8 in the 20 boss Il of the rollback IT. The respectiveends of rod H) are pivotally connected to lever handles 26 20' by pins22 each of which is located in a convenient hole 22*. There may be aplurality of holes 22 to facilitate fitting to doors of differentthickness- The upper end of each handle 20 20 is supported on a pivotpin 20 which engages a lug 2| on a plate 2| which is fixed to a face ofthe door D.

The lower part of each handle. 20*, 20 is offset at 20 to facilitateaccess to a keyhole 20 that is associated with lock mechanism (notshown) which may be of any suitable type. Handle 20 normally projectsoutwardly obliquely and is adapted to be actuated by inward pressure sothat when it is pushed in the direction of arrow 20 it first moves thebar [9 longitudinally to rotate the rollback I1 and so retract the bolt[5, and continuation of the pressure opens the door D. The upper part ofhandle 20 is normally parallel with the door D (or nearly so) and itslower part projects sufiiciently to be gripped by a user. This handle isactuated by a pull in the direction of arrow m to move the bar I9 and soactuate the rollback I! to retract modified so that the rollbackoperatively engages the said bar in such manner that when the bar ismoved longitudinally from normal position the rollback is partiallyrotated.

The rollback I! may be cast or otherwise suitably formed in one piece orit may comprise a plurality of members l'l IF and I! formed of sheetmetal as shown in Fig. 7 and fixed together in any suitable manner toform a rollback as shown in Fig. 8.

In the modified arrangement shown in Figs. 9 to 11 the actuating bar orrod is a longitudinally slidable bar 19* on which is a wedge-shapedprojection I9 The said bar extends through a hole l5 in a bolt l5 andits wedge I9 operatively engages a wall 15 thereof. Bolt l5 is slidablyarranged in a casing l5 in known manner and it is normally actuated tooperative projecting position by a spring 16 The ends of bar l9 arepivotally connected to lever handles as 20, 20 by which the bar isactuated in manner previously described. Although no lock mechanism hasbeen illustrated in Figs. 9 to 11 it will be apparent that the describedarrangement may be combined with such mechanism while retaining featuresaccording to this invention.

I claim:

1. Control means for catches of the sliding bolt type comprising areciprocable bar the medial part of which is helically twisted throughan angle that does not exceed 180 degrees, a rollback mounted on thetwisted part of said bar, two members arranged to be fixed to oppositefaces of a door, two handles, means to pivotally connect one end of eachhandle to one of said members, and means to pivotally connect the endsof said bar to respective handles so that the free end of each handlemay be actuated as a lever to move the said bar longitudinally topartially rotate the rollback.

2. A control means for catches of the sliding bolt type, as claimed inclaim 1, in which said reciprocable bar consists of a flat strip ofoblong cross section which is twisted through 180 degrees, incombination with a rollback having an aperture the shape of which iscomplementary to the cross sectional shape of said strip.

- 3. Control means for catches of the sliding bolt type comprising areciprocable bar the medial part of which is helically twisted, arollback mounted on the twisted part of said bar, two plates eachthereof having apertures through which an end of the said bar isarranged to project, a lug on each said plate, two lever type handles,means to pivotally connect an end of each handle to one of said lugs,means to connect the ends of said bar to respective handles wherebyeither handle may be actuated as a lever to move the said barlongitudinally, the free end of each handle being ofiset to facilitateaccess to a key hole.

RICHARD MURRAY TURNER.

